GB662154A - Improvements in luminescent materials for television screens - Google Patents

Improvements in luminescent materials for television screens

Info

Publication number
GB662154A
GB662154A GB248849A GB248849A GB662154A GB 662154 A GB662154 A GB 662154A GB 248849 A GB248849 A GB 248849A GB 248849 A GB248849 A GB 248849A GB 662154 A GB662154 A GB 662154A
Authority
GB
United Kingdom
Prior art keywords
zinc
moles
per cent
cadmium
sulphide
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB248849A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Derby & Co Ltd
Original Assignee
Derby & Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Derby & Co Ltd filed Critical Derby & Co Ltd
Priority to GB248849A priority Critical patent/GB662154A/en
Publication of GB662154A publication Critical patent/GB662154A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
    • H01J29/10—Screens on or from which an image or pattern is formed, picked up, converted or stored
    • H01J29/18—Luminescent screens
    • H01J29/187—Luminescent screens screens with more than one luminescent material (as mixtures for the treatment of the screens)

Landscapes

  • Luminescent Compositions (AREA)

Abstract

662,154. Luminescent materials. DERBY & CO., Ltd., and MEYER, H. Jan. 23, 1950 [Jan. 28, 1949], No. 2488/49. Class 39 (i). A luminescent material consists of a mixture of a silver-activated zinc sulphide phosphor and a zinc cadmium sulphide selenide phosphor containing 30 to 38 moles. per cent zinc, 12 to 20 moles per cent cadmium, 44 to 46 moles. per cent sulphur, 4 to 6 moles. per cent selenium, and activated by silver, or silver and copper. The phosphor is prepared by mixing zinc sulphide, cadmium sulphide and zinc (or cadmium) selenide together with the activators and fluxes such as the chlorides of sodium, magnesium, barium and ammonium, fired, washed and sieved.
GB248849A 1949-01-28 1949-01-28 Improvements in luminescent materials for television screens Expired GB662154A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB248849A GB662154A (en) 1949-01-28 1949-01-28 Improvements in luminescent materials for television screens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB248849A GB662154A (en) 1949-01-28 1949-01-28 Improvements in luminescent materials for television screens

Publications (1)

Publication Number Publication Date
GB662154A true GB662154A (en) 1951-12-05

Family

ID=9740452

Family Applications (1)

Application Number Title Priority Date Filing Date
GB248849A Expired GB662154A (en) 1949-01-28 1949-01-28 Improvements in luminescent materials for television screens

Country Status (1)

Country Link
GB (1) GB662154A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2727865A (en) * 1952-12-20 1955-12-20 Rca Corp Luminescent composition

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2727865A (en) * 1952-12-20 1955-12-20 Rca Corp Luminescent composition

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